I don't even understand the debate, other than a response to the borderline rude nature of the commentary.
Tying in the sub-frames to the floor is going to be substantially stronger, than just touching a frame to the other frame.
Whether the lesser works great, doesn't matter. In the case of rigidity and strength, this more is better.
In the end, though, what are you trying to achieve? Sometimes you want flexing to achieve your goal, sometimes you absolutely do not. Sometimes you want less weight, sometimes it doesn't matter.
Don't get a titty twisted over it.
